just started to measure the handles and cylinders. Hit a snag on the french doors.
On the first french door (the door you unlock first), you can access the cylinder retaining screw - so far so good. However, on the second door (the one with the center latch in), you cant access the retaining screw. The side of the door has the extra UPVC post screwed in and then the centre latch is screwed in to this post - not sure if this is making sense to people??
is it a case of unscrewing the centre latch from the UPVC and then unscrewing the UPVC post from the door?
To avoid doing this twice (once to measure the cyclinder and again to install the new cylinder), is it safe to assume that the sizes of the two cylinders on the french doors will be the same?
Thanks
Rich